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@geiten 'faire @anni @ffice JOHN C. WILMARTH AND AVERY FOBES, OF ST. LOUIS, MISSOURI.

Letters PatentNo. 82,912, dated October" 6, 1868.

IMPROVEMENT IN KNIFE-RING.

TO ALL WHOM IT MAY. GONOERN:

Be it known that we, JOHN C. WILMARTH and AVERY FOBES, of St Louis, in the county of St. Louis, and State of Missouri, have made certain new and useful Improvements in Knife-Ring, for cutting threads on packages, for shop-keepers and others; and we do hereby declare that the following is a full and clear description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

.lhis invention relates to a knife-blade, secured to a. stud on the back of a nger-ring, in such a convenient position as tobe readily. adapted to the use of shop-keepersforcutting the 'strings of packages.

To enable those skilled in the art to make and use our improved knife-ring, w'e will proceed to describe its construction and operation.

Figure 1 ofthe drawings is a back sid elevation ofthe improved ring.

Figure 2 is a side elevation of the same.

Figure 3 is a. front elevation.

Figure 4 is atop plan; and

Figure 5 isa central section. v

The ring A may be constructed of metal or India rubber, in the usual manner of'ingcr-rings, and vto. the back side of it will be secured, byriveting or otherwise, a stud, a, which may be of the same material as the ring itself. To the back side'of this stud will be secured a small knife-blade, al, the cutting-edge of which will be back toward the person of the wearer. The top ofthe stud a will overlap the front edge of the knife-blade, and will be coveredby a metal Vcap-piece or shield, a2, which will prevent the edge of the knife-blade from cutting the clothing of the wearer, or otherwise becoming inconvenient or dangerous.-

Having described-our invention, what we claim is- The combination and arrangement of the ring A, having the stud a, knife al, and shielddz, as and for tbe purpose described and set forth.

' JOHN C. WILMARTH.

AVERY FOBES. Witnesses:

M. RANDOLPH, ROBERT BURNS. 

